Light bulb



FIG. 1 is a side elevational view of a light bulb showing my new design, all sides being identical;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevational view of a second embodiment of my new design, all sides being identical;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a side elevational view of a third embodiment of my new design, all sides being identical;

FIG. 8 is a top plan view thereof;

FIG. 9 is a bottom plan view thereof. 

The ornamental design for a light bulb, as shown and described. 